iommu/vt-d: Remove dmar_writel() and dmar_writeq()

iommu/vt-d: Remove dmar_writel() and dmar_writeq()

dmar_writel() and dmar_writeq() do nothing other than expand to the generic
writel() and writeq(), and the dmar_write*() wrappers are used
inconsistently.

Remove the dmar_write*() wrappers and use writel() and writeq() directly.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Samiullah Khawaja <skhawaja@google.com>
Link: https://lore.kernel.org/r/20260217214438.3395039-3-bhelgaas@google.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>